package com.lashou.chunshen.lashoutuangou.tools;

import android.content.Context;
import android.content.SharedPreferences;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Map;

/**
 * @author wuyue
 */
public class SPUtils {
	 
	    /** 
	     * 保存在手机里面的文件名 
	     */  
	    public static final String FILE_NAME = "share_data_weixin";  
	  
	    /** 
	     * 保存数据的方法，我们需要拿到保存数据的具体类型，然后根据类型调用不同的保存方法 
	     *
	     * @param context
	     * @param key
	     * @param object
	     */
	    public static void put(Context context, String key, Object object)
	    {  
	  
	        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,  
	                Context.MODE_PRIVATE);  
	        SharedPreferences.Editor editor = sp.edit();  
	  
	        if (object instanceof String)  
	        {  
	            editor.putString(key, (String) object);  
	        } else if (object instanceof Integer)  
	        {  
	            editor.putInt(key, (Integer) object);  
	        } else if (object instanceof Boolean)  
	        {  
	            editor.putBoolean(key, (Boolean) object);  
	        } else if (object instanceof Float)  
	        {  
	            editor.putFloat(key, (Float) object);  
	        } else if (object instanceof Long)  
	        {  
	            editor.putLong(key, (Long) object);  
	        } else  
	        {  
	            editor.putString(key, object.toString());  
	        }  
	  
	        SharedPreferencesCompat.apply(editor);
		}
	  
	    /** 
	     * 得到保存数据的方法，我们根据默认值得到保存的数据的具体类型，然后调用相对于的方法获取值 
	     *  
	     * @param context 
	     * @param key 
	     * @param defaultObject 
	     * @return 
	     */  
	    public static Object get(Context context, String key, Object defaultObject)  
	    {  
	        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,  
	                Context.MODE_PRIVATE);  
	  
	        if (defaultObject instanceof String)  
	        {  
	            return sp.getString(key, (String) defaultObject);  
	        } else if (defaultObject instanceof Integer)  
	        {  
	            return sp.getInt(key, (Integer) defaultObject);  
	        } else if (defaultObject instanceof Boolean)  
	        {  
	            return sp.getBoolean(key, (Boolean) defaultObject);  
	        } else if (defaultObject instanceof Float)  
	        {  
	            return sp.getFloat(key, (Float) defaultObject);  
	        } else if (defaultObject instanceof Long)  
	        {  
	            return sp.getLong(key, (Long) defaultObject);  
	        }  
	  
	        return null;  
	    }  
	  
	    /** 
	     * 移除某个key值已经对应的值 
	     * @param context 
	     * @param key 
	     */  
	    public static void remove(Context context, String key)  
	    {  
	        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,  
	                Context.MODE_PRIVATE);  
	        SharedPreferences.Editor editor = sp.edit();  
	        editor.remove(key);  
	        SharedPreferencesCompat.apply(editor);  
	    }  
	  
	    /** 
	     * 清除所有数据 
	     * @param context 
	     */  
	    public static void clear(Context context)  
	    {  
	        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,  
	                Context.MODE_PRIVATE);  
	        SharedPreferences.Editor editor = sp.edit();  
	        editor.clear();  
	        SharedPreferencesCompat.apply(editor);  
	    }  
	  
	    /** 
	     * 查询某个key是否已经存在 
	     * @param context 
	     * @param key 
	     * @return 
	     */  
	    public static boolean contains(Context context, String key)  
	    {  
	        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,  
	                Context.MODE_PRIVATE);  
	        return sp.contains(key);  
	    }  
	  
	    /** 
	     * 返回所有的键值对 
	     *  
	     * @param context 
	     * @return 
	     */  
	    public static Map<String, ?> getAll(Context context)  
	    {  
	        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,  
	                Context.MODE_PRIVATE);  
	        return sp.getAll();  
	    }  
	  
	    /** 
	     * 创建一个解决SharedPreferencesCompat.apply方法的一个兼容类 
	     *  
	     * @author admin 
	     *  
	     */  
	    private static class SharedPreferencesCompat  
	    {  
	        private static final Method sApplyMethod = findApplyMethod();  
	  
	        /** 
	         * 反射查找apply的方法 
	         *  
	         * @return 
	         */  
	        @SuppressWarnings({ "unchecked", "rawtypes" })  
	        private static Method findApplyMethod()  
	        {  
	            try  
	            {  
	                Class clz = SharedPreferences.Editor.class;  
	                return clz.getMethod("apply");  
	            } catch (NoSuchMethodException e)  
	            {  
	            }  
	  
	            return null;  
	        }  
	  
	        /** 
	         * 如果找到则使用apply执行，否则使用commit 
	         *  
	         * @param editor 
	         */  
	        public static void apply(SharedPreferences.Editor editor)  
	        {  
	            try  
	            {  
	                if (sApplyMethod != null)  
	                {  
	                    sApplyMethod.invoke(editor);  
	                    return;  
	                }  
	            } catch (IllegalArgumentException e)  
	            {  
	            } catch (IllegalAccessException e)  
	            {  
	            } catch (InvocationTargetException e)  
	            {  
	            }  
	            editor.commit();  
	        }  
	    }  
	  
}
